Fuzz introspector: fuzztest_proto3_static
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity Unique Reachable Complexities Unique Reachable Functions All non-covered Complexity All Reachable Complexity Function Name Function Callsite Blocked Branch
15 15 1 :

['pb_field_iter_begin_extension']

15 366 pb_field_set_to_default call site: 00020 /src/nanopb/pb_decode.c:874
5 5 1 :

['encode_callback_field']

5 5 encode_field call site: 00161 /src/nanopb/pb_encode.c:457
0 363 2 :

['pb_field_iter_begin', 'pb_message_set_to_defaults']

0 725 decode_static_field call site: 00095 /src/nanopb/pb_decode.c:536
0 47 2 :

['pb_close_string_substream', 'pb_make_string_substream']

0 428 pb_decode_ex call site: 00010 /src/nanopb/pb_decode.c:1158
0 9 1 :

['pb_write']

0 9 pb_encode_submessage call site: 00211 /src/nanopb/pb_encode.c:744
0 9 1 :

['pb_write']

0 9 encode_array call site: 00178 /src/nanopb/pb_encode.c:177
0 2 1 :

['pb_istream_from_buffer']

0 776 pb_message_set_to_defaults call site: 00014 /src/nanopb/pb_decode.c:958
0 0 None 346 804 pb_decode_inner call site: 00014 /src/nanopb/pb_decode.c:1011
0 0 None 346 804 pb_decode_inner call site: 00014 /src/nanopb/pb_decode.c:1047
0 0 None 346 804 pb_decode_inner call site: 00014 /src/nanopb/pb_decode.c:1059
0 0 None 346 804 pb_decode_inner call site: 00014 /src/nanopb/pb_decode.c:1103
0 0 None 215 454 pb_encode call site: 00154 /src/nanopb/pb_encode.c:519

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 do_roundtrips [function] [call site] 00001
2 get_alloc_count [function] [call site] 00002
2 do_decode [function] [call site] 00003
3 get_alloc_count [function] [call site] 00004
3 malloc_with_check [function] [call site] 00005
4 round_blocksize [function] [call site] 00006
3 malloc_with_check [function] [call site] 00007
3 __assert_fail [call site] 00008
3 pb_istream_from_buffer [function] [call site] 00009
3 pb_decode_ex [function] [call site] 00010
4 pb_decode_inner [function] [call site] 00011
5 pb_field_iter_begin [function] [call site] 00012
6 load_descriptor_values [function] [call site] 00013
5 pb_message_set_to_defaults [function] [call site] 00014
6 pb_istream_from_buffer [function] [call site] 00015
6 pb_decode_tag [function] [call site] 00016
7 pb_decode_varint32_eof [function] [call site] 00017
8 pb_readbyte [function] [call site] 00018
8 pb_readbyte [function] [call site] 00019
6 pb_field_set_to_default [function] [call site] 00020
7 pb_field_iter_begin_extension [function] [call site] 00021
8 pb_field_iter_begin [function] [call site] 00022
8 pb_field_iter_begin [function] [call site] 00023
7 pb_message_set_to_defaults [function] [call site] 00024
8 decode_field [function] [call site] 00025
9 decode_static_field [function] [call site] 00026
10 decode_basic_field [function] [call site] 00027
11 pb_dec_bool [function] [call site] 00028
12 pb_decode_bool [function] [call site] 00029
13 pb_decode_varint32 [function] [call site] 00030
14 pb_decode_varint32_eof [function] [call site] 00031
11 pb_dec_varint [function] [call site] 00032
12 pb_decode_varint [function] [call site] 00033
13 pb_readbyte [function] [call site] 00034
12 pb_decode_svarint [function] [call site] 00035
13 pb_decode_varint [function] [call site] 00036
12 pb_decode_varint [function] [call site] 00037
11 pb_decode_fixed32 [function] [call site] 00038
11 pb_decode_fixed64 [function] [call site] 00042
11 pb_dec_bytes [function] [call site] 00044
12 pb_decode_varint32 [function] [call site] 00045
11 pb_dec_string [function] [call site] 00047
12 pb_decode_varint32 [function] [call site] 00048
11 pb_dec_submessage [function] [call site] 00050
12 pb_make_string_substream [function] [call site] 00051
13 pb_decode_varint32 [function] [call site] 00052
12 pb_decode_inner [function] [call site] 00053
13 pb_decode_tag [function] [call site] 00054
13 pb_field_iter_find [function] [call site] 00055
14 advance_iterator [function] [call site] 00056
14 load_descriptor_values [function] [call site] 00057
14 load_descriptor_values [function] [call site] 00058
13 pb_field_iter_find_extension [function] [call site] 00059
14 advance_iterator [function] [call site] 00060
14 load_descriptor_values [function] [call site] 00061
14 load_descriptor_values [function] [call site] 00062
13 decode_extension [function] [call site] 00063
14 default_extension_decoder [function] [call site] 00064
15 pb_field_iter_begin_extension [function] [call site] 00065
15 decode_field [function] [call site] 00066
16 decode_pointer_field [function] [call site] 00067
16 decode_callback_field [function] [call site] 00068
17 pb_skip_field [function] [call site] 00069
18 pb_skip_varint [function] [call site] 00070
18 pb_skip_string [function] [call site] 00073
19 pb_decode_varint32 [function] [call site] 00074
17 pb_make_string_substream [function] [call site] 00077
17 pb_close_string_substream [function] [call site] 00078
17 read_raw_value [function] [call site] 00080
17 pb_istream_from_buffer [function] [call site] 00084
13 pb_skip_field [function] [call site] 00085
13 decode_field [function] [call site] 00086
12 pb_close_string_substream [function] [call site] 00087
11 pb_dec_fixed_length_bytes [function] [call site] 00088
12 pb_decode_varint32 [function] [call site] 00089
10 decode_basic_field [function] [call site] 00091
10 pb_make_string_substream [function] [call site] 00092
10 decode_basic_field [function] [call site] 00093
10 pb_close_string_substream [function] [call site] 00094
10 decode_basic_field [function] [call site] 00095
10 pb_field_iter_begin [function] [call site] 00096
10 pb_message_set_to_defaults [function] [call site] 00097
11 pb_decode_tag [function] [call site] 00098
11 pb_field_iter_next [function] [call site] 00099
12 advance_iterator [function] [call site] 00100
12 load_descriptor_values [function] [call site] 00101
10 decode_basic_field [function] [call site] 00102
7 pb_field_iter_begin [function] [call site] 00103
7 pb_message_set_to_defaults [function] [call site] 00104
4 pb_make_string_substream [function] [call site] 00105
4 pb_decode_inner [function] [call site] 00106
4 pb_close_string_substream [function] [call site] 00107
3 validate_message [function] [call site] 00108
4 pb_field_iter_begin_const [function] [call site] 00109
5 pb_const_cast [function] [call site] 00110
4 validate_static [function] [call site] 00111
5 __assert_fail [call site] 00112
5 memcmp [call site] 00113
5 strlen [call site] 00114
5 __assert_fail [call site] 00115
5 memcmp [call site] 00116
5 validate_message [function] [call site] 00117
6 validate_pointer [function] [call site] 00118
7 __assert_fail [call site] 00119
7 get_allocation_size [function] [call site] 00120
7 __assert_fail [call site] 00121
7 get_allocation_size [function] [call site] 00122
7 __assert_fail [call site] 00123
7 strlen [call site] 00124
7 get_allocation_size [function] [call site] 00125
7 get_allocation_size [function] [call site] 00126
7 __assert_fail [call site] 00127
7 memcmp [call site] 00128
7 validate_message [function] [call site] 00129
8 pb_field_iter_next [function] [call site] 00130
3 fprintf [call site] 00131
3 __assert_fail [call site] 00132
3 pb_release [function] [call site] 00133
3 free_with_check [function] [call site] 00134
4 __assert_fail [call site] 00135
4 __assert_fail [call site] 00136
4 __assert_fail [call site] 00137
4 __assert_fail [call site] 00138
3 free_with_check [function] [call site] 00139
3 get_alloc_count [function] [call site] 00140
3 __assert_fail [call site] 00141
2 do_roundtrip [function] [call site] 00142
3 malloc_with_check [function] [call site] 00143
3 malloc_with_check [function] [call site] 00144
3 __assert_fail [call site] 00145
3 pb_istream_from_buffer [function] [call site] 00146
3 pb_decode [function] [call site] 00147
4 pb_decode_inner [function] [call site] 00148
3 fprintf [call site] 00149
3 __assert_fail [call site] 00150
3 validate_message [function] [call site] 00151
3 pb_ostream_from_buffer [function] [call site] 00152
3 pb_encode [function] [call site] 00153
4 pb_field_iter_begin_const [function] [call site] 00154
4 encode_extension_field [function] [call site] 00155
5 default_extension_encoder [function] [call site] 00156
6 pb_field_iter_begin_extension_const [function] [call site] 00157
7 pb_const_cast [function] [call site] 00158
6 encode_field [function] [call site] 00159
7 safe_read_bool [function] [call site] 00160
7 pb_check_proto3_default_value [function] [call site] 00161
8 safe_read_bool [function] [call site] 00162
8 pb_field_iter_begin [function] [call site] 00163
8 pb_check_proto3_default_value [function] [call site] 00164
9 pb_field_iter_next [function] [call site] 00165
7 encode_callback_field [function] [call site] 00166
7 encode_array [function] [call site] 00167
8 pb_encode_tag [function] [call site] 00168
9 pb_encode_varint [function] [call site] 00169
10 pb_write [function] [call site] 00170
10 pb_encode_varint_32 [function] [call site] 00171
11 pb_write [function] [call site] 00172
8 pb_enc_varint [function] [call site] 00173
9 pb_encode_varint [function] [call site] 00174
9 pb_encode_svarint [function] [call site] 00175
10 pb_encode_varint [function] [call site] 00176
9 pb_encode_varint [function] [call site] 00177
8 pb_encode_varint [function] [call site] 00178
8 pb_enc_fixed [function] [call site] 00180
9 pb_encode_fixed32 [function] [call site] 00181
10 pb_write [function] [call site] 00182
9 pb_encode_fixed64 [function] [call site] 00183
10 pb_write [function] [call site] 00184
8 pb_enc_varint [function] [call site] 00185
8 pb_encode_tag_for_field [function] [call site] 00186
9 pb_encode_tag [function] [call site] 00187
8 pb_encode_varint [function] [call site] 00188
8 encode_basic_field [function] [call site] 00189
9 pb_encode_tag_for_field [function] [call site] 00190
9 pb_enc_bool [function] [call site] 00191
10 safe_read_bool [function] [call site] 00192
10 pb_encode_varint [function] [call site] 00193
9 pb_enc_varint [function] [call site] 00194
9 pb_enc_fixed [function] [call site] 00195
9 pb_enc_bytes [function] [call site] 00196
10 pb_encode_string [function] [call site] 00197
11 pb_encode_varint [function] [call site] 00198
11 pb_write [function] [call site] 00199
10 pb_encode_string [function] [call site] 00200
9 pb_enc_string [function] [call site] 00201
10 pb_encode_string [function] [call site] 00202
9 pb_enc_submessage [function] [call site] 00203
10 pb_encode_submessage [function] [call site] 00204
11 pb_encode [function] [call site] 00205
12 encode_field [function] [call site] 00206
13 encode_basic_field [function] [call site] 00207
14 pb_enc_fixed_length_bytes [function] [call site] 00208
15 pb_encode_string [function] [call site] 00209
12 pb_field_iter_next [function] [call site] 00210
11 pb_encode_varint [function] [call site] 00211
11 pb_write [function] [call site] 00212
11 pb_encode [function] [call site] 00213
8 encode_basic_field [function] [call site] 00214
3 strcmp [call site] 00215
3 fprintf [call site] 00216
3 __assert_fail [call site] 00217
3 xor32_checksum [function] [call site] 00218
3 pb_release [function] [call site] 00219
3 pb_istream_from_buffer [function] [call site] 00220
3 pb_decode [function] [call site] 00221
3 fprintf [call site] 00222
3 __assert_fail [call site] 00223
3 validate_message [function] [call site] 00224
3 pb_ostream_from_buffer [function] [call site] 00225
3 pb_encode [function] [call site] 00226
3 fprintf [call site] 00227
3 __assert_fail [call site] 00228
3 xor32_checksum [function] [call site] 00229
3 __assert_fail [call site] 00230
3 __assert_fail [call site] 00231
3 pb_release [function] [call site] 00232
3 free_with_check [function] [call site] 00233
3 free_with_check [function] [call site] 00234
2 do_stream_decode [function] [call site] 00235
3 malloc_with_check [function] [call site] 00236
3 __assert_fail [call site] 00237
3 flakystream_init [function] [call site] 00238
3 pb_decode [function] [call site] 00239
3 validate_message [function] [call site] 00240
3 fprintf [call site] 00241
3 __assert_fail [call site] 00242
3 pb_release [function] [call site] 00243
3 free_with_check [function] [call site] 00244
3 get_alloc_count [function] [call site] 00245
3 __assert_fail [call site] 00246
2 get_alloc_count [function] [call site] 00247
2 __assert_fail [call site] 00248